Switch to package.json prepack script so that yarn can install from git

[cspotcode]

Related: #1958 (comment)

When installing directly from git, we have our package.json configured to run the build. We are currently using prepare for this, but yarn does not support that and recommends prepack instead.

npm docs seems to agree https://docs.npmjs.com/cli/v9/using-npm/scripts

Runs BEFORE a tarball is packed (on "npm pack", "npm publish", and when installing a git dependency).

[4lph4-Ph4un]

You sure this install path from git works okay with Yarn >2?

This is from their documentation:

Note: For this workflow to work, make sure that each individual workspaces can be built just by running yarn install && yarn pack into each individual workspace. In particular, avoid third-party release scripts unless they use yarn pack under the hood.

Link to the referenced part:
https://yarnpkg.com/features/protocols#frequently-asked-questions

Here's my issue related to this #2002